Cultivator



Jan. 28, 1930. I s, (:OVENTRY 1,745,009

CULT IVATOR Filed Sept. 20. 1926 WW2 .Fv Y

Patented Jan. 28, 1930 uarrEo STATES v ALICK HERBERT srnrnnu COVENTRY, or PIETERMARITZBURG,. NATAL, scorn AFRIGA----m"-' c cun'rivn'roii Application filed September 20, 1926, Serial No. 136,666, and tlie' 'Union of 'Soutl A frica June 18, 1926.

This invention relates to a new or improved agricultural implement and has for its object to provide a cultivator the distance between whose cutting members, tines, shares or the like shall be capable of adjustment to suit the row or rows to be worked.

In accordance with my invention I provide a cultivator having a plurality of members in the form of radial arms pivotally connected to the rear end of the cultivator beam and adapted to travel on a circular guide forming an integral part of the frame of the cultivator. At the free or outer ends of the said radial arms and pivotally mounted thereon I provide longitudinal members on which I mount brackets of suitable shape and construction having tapered ends which engage with sockets or slots formed on the underside of the tines, thereby eliminating the necessity for bolts and nuts or like fastenings.

The said longitudinal membersare pivotally connected at their forward end to a collar encircling the cultivator beam and slidably mounted thereon. The said collar in turn is connected by means of an obliqudmember to the usual upright type of control hand lever and the position of the tines is maintained by a locking device consisting of a slotted bar engaging with, a projection on the oblique member and operated from the hand lever I handle by means of the usual spring handle 7 and'rod.

In order that my invention may be readily understood and carried into effect, reference is hereby made to the accompanying sheet of drawings which show by way of example a convenient embodiment of my invention and Wherein Fig. 1 is an elevation of the cultivator,

Fig. 2 is a plan thereof, f

Fig. 3 is an isometric View of the invent on,

Fig. 4; is an alternative form of share, and Fig. 5 is the reverse side of the same showa ing the shoe or recessformed in the share'for the reception of the bracket ends.

Referring to these drawings wherein like letters of reference indicate corresponding parts wherever occurring throughout all the figures a designates the cultivator beam encircling which and sliding thereon is a colated by the lever clthe foot of which is bolted to and hinges in the cultivator beam (1.

' At the foot of the handlever cl is the spring controlledlocking bar 6 operated by the lift- 'iiig rod 'and whose. notchescengage as desired on the tooth g which is secured tothe oblique member'c. Also attacheditothe collar b' are two longitudinal members it to which are boltedcurved brackets which are adj ustable in relation to the members hand whose lower extremities are squared to fit the shoe or recess is on the cutting'members, tines or shares Z. At the rear end of the longitudinal membersv h are pivotally connected the upper and lower radial arms on whichslide in pairs over and under a circular guiden which is'bolted to the cultivator beam a and forms an integralpart of the cultivator frame.

In operation the cultivator is employed in the ordinary way-and when, by reason of the difference in width between rows, often The lever d is now free to move forwardor backward as desired until again locked by releasing the hand which drops the rod 7 and with it the locking bar 6.

ATiazli'jr OFFICE The action of moving the lever cl causes forward or rearward motion in the collar 1?; through the medium of the oblique memerc.

This forward or rearward motion of b is transmitted to the longitudinal members it and by means of the radial arms m .it becomes lateral or side motion as well.

' As the brackets j carrying the cutting members, tines, or shares Z are situated at the extremity of the radial arms m, it will be seen that any movement of the lever d results in lateral or side motion to them.

Thus by a single forward or rearward movement of the lever d the width between the cutting members, tines, or shares Z may be increased or reduced at will.

\Vhat I claim is:

1. A cultivator structure, including a beam, a plurality of arms pivotally connected adjacent the rear extremity of said beams, tines carried by said arms, a circular guide movably supporting said arms for pivotal movement, and means for actuating said arm said actuating means including longitudinal members slidably mounted on the beam in advance of said arms.

2. A cultivator structure, including a beam, arms pivot-ally connected thereto, a circular guide supporting the arms for pivotal movement, tines carried by the arms, a means for actuating the radial arms carrying the tines including longitudinal members pivotally connected at their forward ends to a collar encircling the beam and slidably mounted thereon and at their rear ends to the outer extremities of the radial arms, the collar in turn bein connected by an oblique member to an upright type of control hand lever provided with a locking device.

3. A cultivator as set forth in claim 2 wherein the locking device consists of a slotted bar pivotally secured to the hand lever and adjustably connected with the oblique member which in turn is secured to the sliding collar.

4. A cultivator as set forth in claim 1 characterized in that the radial arms are formed in pairs over and under the circular guide.

5. A cultivator as set forth in claim 1 characterized in that the circular guide forms an integral part of the cultivator frame.

In testimony whereof, I have signed my name to this specification at Masons Mill, Pietermarit-zburg, this 3rd day of August, 1926.

ALICK HERBERT STEPHEN COVENTRY. 

